Finding the Fourth Proportional to 68,864.80, 103,102.80 and 66,920.80
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Solution
The fourth proportional to 68,864.80, 103,102.80 and 66,920.80 is: 100,192.29
Step by Step Solution
- Step 1: Write the proportion equation
68,864.80 : 103,102.80 = 66,920.80 : x - Step 2: Convert to fraction form
68,864.80/103,102.80 = 66,920.80/x - Step 3: Cross multiply
68,864.80x = 103,102.80 × 66,920.80 - Step 4: Simplify right side
68,864.80x = 6,899,721,858.24 - Step 5: Solve for x
x = 6,899,721,858.24/68,864.80 - Step 6: Final answer
x = 100,192.29
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.